Description

Woodward XI1ER1 XI1ER 1A / Directional Earth Overcurrent Protection Relay

Woodward XI1ER1 XI1ER Relay 1A / Directional Earth Overcurrent for Compensated or Isolated Grids. High Precision. IEC 60255-1.

FEATURES & FUNCTIONALITY : Woodward XI1ER1 XI1ER Relay

1A / Directional Earth Overcurrent for Compensated or Isolated Grids. High Precision. Basic time delay accuracy: 0.5 % or ±25 ms. Basic accuracy of characteristic quantities: ±2 % of IE the setting value or ±0.002 x IN ±1 % of Ue or ±0,5 V. Real current component meas. in compensated systems: IE x cos φ. Reactive current component meas. in isolated systems: IE x sin φ. Accuracy of measured angle at Ue > 20 V: ± 6° at IE = 0.002 x IN, ± 3° at IE = 0.005 x IN, ± 2° at IE = 0.010 x IN, ± 1° at IE ≥ 0.015 x IN . 250 x In (half cycle), 100 x In for 1s, 30 x In for 10 s, 4 x In continuous

The XI1E of the PROFFESIONAL LINE is an all-purpose protection against earth faults, used for electrical machines, lines and isolated or compensated systems; it is mainly used in radial networks. Very often the XI1E can be found as backup protection at the central earthing point of the system. It detects all earth faults occurring in the system.
Relay variant XI1E-R with directional current sensing is a selective earth-fault protection and is normally used in ring systems, networks with parallel feeders and in complex meshed systems.

The XI1E is compliant with IEC 60255-1. Order Variants of the XI1E

• XI1E1 (1 A) – ANSI 50Ns, 51Ns
• XI1E5 (5 A) – ANSI 50Ns, 51Ns
• XI1ER1 (1 A) – ANSI 50Ns, 51Ns, 67Ns
• XI1ER5 (5 A) – ANSI 50Ns, 51Ns, 67Ns

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Woodward designs, manufactures and supports a complete line of intelligent multifunctional protection and control relays that are used in a range of power generation and distribution applications (e.g. utility, industrial, renewable and generator sets). Decades of experience, combined with continuous improvement into our protection relays, bring advanced technology to your installations. Our modular-designed product families provide an array of solutions for mains decoupling, feeder, motor, transformer, generator, and line protection.

The integrated concept of protection functions in one device tailored to specific requirements results in a cost-effective solution for reliable, state-of-the-art protection systems. Woodward is recognized as a leader in the field of advanced power generation and distribution control products. Our cutting-edge control and protection devices are designed to work in complex systems to meet the needs of tomorrow’s smart grids. In particular, our medium- and high-voltage protection relays deliver reliable protection of your distribution systems. These multi- and single-function relays are equipped with cyber security features to protect the grid and carry UL and CSA approval as well as KEMA certification.

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